This weekend, Germany is facing the biggest snow chaos in years - but only in the north.
While the German Weather Service is expecting a blizzard and freezing cold there, there should be spring-like foehn in the south.
Deutsche Bahn warns of train cancellations and delays.
The north is threatened with up to 40 centimeters of fresh snow, as well as "enormous snow drifts" from storms.
According to the DWD, the region from Emsland and Münsterland to the Harz region will be particularly affected from Saturday evening.
In the Ruhr area, the Siegerland, in Central Hesse and Upper Franconia, however, there is freezing rain from Sunday afternoon to Monday, which could result in a layer of ice several centimeters thick.
The DWD expects significant traffic disruptions due to storm-like freezing rain with supra-regional effects on roads and railways.
Deutsche Bahn informed: "There may be delays and train cancellations." Passengers who wanted to postpone trips planned for the weekend because of the announced onset of winter in northern Germany could use long-distance tickets already booked "either flexibly or free of charge" up to and including seven days after the end of the disruption.
Because of the forecast, there will be no long-distance traffic between Kiel and Hamburg, Hamburg and Lübeck and between Hamburg and Westerland on Saturday and Sunday, the railway said.
Temperature gradient of around 20 degrees between northern and southern Germany
Meteorologists speak of a “memorable event with a rarity value” - and draw comparisons to the winter of 1978/79, when the transport, supply and communication network collapsed during a snow catastrophe in northern Germany.
Experts expect a temperature gradient of around 20 degrees between northern and southern Germany.
In January 1979, cars completely snowed in Loose / Schleswig-Holstein
Source: dpa / Werner Schilling
In Lower Saxony, for example, the fire brigade and disaster control, police, transport companies and railways, road maintenance and clearance services were preparing for a challenging weekend.
The meteorologists expected that the southern part of Lower Saxony will be particularly affected.
The people there should be prepared for the fact that the power fails and the house cannot be left because of black ice, as Franz Molé, head of the DWD's forecast and advice center, said.